Which statement about sound is true?

Related Mcqs:

1. The echo (reflected sounD. will be distinctly heard only at ordinary temperatures if the distance of the reflecting surfaces from the source of sound is at least ________?

   A. 1120 ft
   B. 120 ft
   C. 56 ft
   D. 100 ft
   E. None of these

2. Name the branch of science which deals with the study of sound and sound waves?

   A. Aeronautics
   B. Acoustics
   C. Aerostatics
   D. Aetiology

   Submitted by: ABDUL HAYEE

3. Which from the following is true for “Sound”?

   A. Sound cannot travel through a vacuum
   B. Sound cannot travel through gases
   C. Sound cannot travel through liquids
   D. Sound cannot travel through solids

4. Sound cannot travel through __________

   A. Solid
   B. Liquid
   C. Gases
   D. Vaccum

   Submitted by: M Khobaib Tariq

5. A loudspeaker changes _________ energy into sound energy.

   A. Chemical
   B. Electrical
   C. Light
   D. Kinetic

   Submitted by: Danish Balani

6. Echo is a ___________ of sound?

   A. Reflection
   B. Refraction
   C. Interference
   D. None

   Submitted by: Awais

7. speed of sound in dry air at 20 °C is___________?

   A. 353 m/s
   B. 345 m/s
   C. 343 m/s
   D. none of them

   Submitted by: ARIF HUSSAIN

8. Sound travels about ___________times faster in water than in air.

   A. 2
   B. 3
   C. 4
   D. 5

   Submitted by: Munwar Ali Sohu

9. When sound waves travel from air to water which of the following quantities remains unchanged?

   A. Speed
   B. Frequency
   C. Intensity
   D. Wavelength

   Submitted by: Rashid Mehmood

10. Only male frog produce croacking sound because _________ ?

    A. Male frog can magnify their voice with the help of sound box.
    B. Male frog have three pair of vocal cord
    C. Female frog have larynx but no vocal cord
    D. Female frog have no larynx

    Submitted by: Rashid Mehmood